I just got a new hole punch.
The punches get dull after a few years of use and it's hard to find replacement parts that fit. This is heavier duty and replacement hole punch tubes are included!
Also in the box: A wrench to tighten or change the cutting tubes and a 6" long metal ruler.
To see it, CLICK HERE
For $13.99 it's probably the best available.
Centering Rings: I use hole punches for engine hook relief notches in centering rings and launch lug holes.
Launch Lugs: Rotated to the largest punch (4.5 mm), it's a perfect friction fit for sliding in a 1/8" diameter launch lug.
Parachutes: Instead of tearing holes with a pencil tip, the smallest diameter punch works perfectly for shroud line holes in a plastic parachute.
TIP: Be sure to use thin cardstock under the thin chute material for a clean punch.
Rotary punches are handy for belt holes and many other household uses.

You can also resharpen the punch dies on this tool. Just unscrew the die, chuck it in a drill and rotate it against 600-800 grit sandpaper. You can also go an extra step and rotate against a piece of leather glued to a flat stick and charged with chromium dioxide for a nicely honed and polished edge.
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